Mounting bracket

ABSTRACT

A mounting bracket for supporting electrical power transformers in clusters of three is disclosed. A first embodiment of the invention comprises a one piece, substantially V-shaped bracket adapted to be mounted to a utility pole and configured to support transformers at the ends of each of its legs and at its vertex. The bracket may be mounted either by direct bolting to a pole, or by use of an island plate abutting a pole and fastened to the legs of the bracket. A second embodiment of the invention may be secured to a pole in the same manner, is also substantially Vshaped, but is assembled of several parts. This embodiment permits angular adjustment of the transformer mounting positions.

United States Patent Sloop [54] MOUNTING BRACKET [72] Inventor: CliffordE. Sloop, 2230 10th Street,

Columbus, Ga. 31902 [22] Filed: Nov. 17, 1970 [21] App]. No.: 90,272

[52] US. Cl ..248/221, 248/230 [51] Int. Cl. ..H02g 7/20 [58] Field ofSearch ..248/221, 230, 231; 52/721;

[56] References Cited UNITED STATES PATENTS 2,990,151 6/1961 Phillips..248/230 x 1,592,530 7/1926 Lee ..248/231 2,883, 1 35 4/1959 Smalley..248/230 2,883,136 4/1959 Smalley ..24s/23o 2,672,693 3/1954 .Cannell..248/231 x 2,879,964 3/1959 Anderson et al. ..248/22l [4 1 Nov. 28,1972 Primary Examiner-4. Franklin Foss Attomey-Newton, Hopkins & OnnsbyABSTRACT A mounting bracketfor supporting electrical power transformersin clusters of three is disclosed. A first embodiment of the inventioncomprises a one piece, substantially V-shaped bracket adapted to. bemounted to a utility pole and configured to support transformers at theends of each of its legs and at its vertex. The bracket may be mountedeither by direct bolting to a pole, or by use of an island plateabutting a pole and fastened to the legs of the bracket. A'se'condembodiment of the invention may be secured to a pole in the same manner,is also substantially V-shaped, but is assembled of several parts. Thisembodiment permits angular adjustment of the transformer mountingpositions.

6 Clains, 9 Drawing Figures MOUNTING BRACKET BACKGROUND OF THE INVENTIONThis invention relates generally to the art of mounting or supportingbrackets, and more particularly to brackets for supporting heavyelectrical equipment such as transformers.

Ever since electric power came into widespread use, the problem ofsupporting electrical transformers on utility poles has existed. Theadvent of three phase power compounded the problem, since three phasepower requires separate transformers for each phase. Because of the nowcommon use of three phase power, it is therefore generally necessary tomount electrical power transformers in clusters of three.

In early times, when the use of electrical power was limited,transformers were small and therefore the three transformers were simplymounted in a row on rigid wooden cross arms attached to utility poles.As the extent of use of electrical power grew, the transformers alsogrew in size and weight, so that it eventually became necessary tosupport them on heavy wooden beams supported at each end by a separateutility pole. This type of mount was quite bulky, since it requiredenough space to plant two separate utility poles far enough apart toaccommodate a cross beam sufficiently long to carry three transformers.It was also a time consuming and an extremely expensive manner ofmounting transformers, since a considerable amount of time was requiredto mount the two utility poles and because the cost of utility poles andtheir installation was high. In an effort to circumvent these problemsof bulkiness and undue cost, a circular band transformer mountingbracket was developed, which, with numerous minor modifications, isperhaps the most commonly used transformer mounting bracket today.However, even this mounting bracket possessed a variety ofdisadvantages. For example, in order to make the heavy band structuresadjustable, so that they could be used with utility poles of varyingdiameters, complicated and expensive adjusting hardware had to be builtinto each such bracket manufactured. In addition to making the bracketsexpensive and difficult to install, this adjusting hardware also causedthem to be unsymmetrical. These brackets were constructed such that twotransformers were mounted, one on either side of a utility pole, whilethe third transformer was mounted at an angle of 90 to the line definedby the other two resulting in a highly unsymmetrical configuration. Theunsymmetrical configuration was necessary because the adjusting hardwarementioned above occupied a large portion of the diameter of the bracket,making the mounting of transformers in a symmetrical fashion impossible.

Some modified mounting brackets of the steel band variety have beendeveloped which permit transformers to be mounted symmetrically aroundutility poles. However, even these structures require a larger number ofparts, are complicated and expensive to manufacture, and are verydifficult to adjust and install.

SUMMARY OF THE INVENTION Accordingly, one object of this invention is toprovide a simple and effective yet inexpensive transformer mount.

Another object of this invention is to provide a novel transformermounting bracket'that is relatively easy to install.

Yet another object of this invention is to provide a transformermounting bracket including novel means for mounting to a utility pole.

A still further object of this invention is the provision of an improvedmounting bracket for electrical equipment that may be mounted in aplurality of manner to utility poles.

A still further object of this invention is the provision of a noveltransformer mounting bracket that permits the mounting of transformersin a plurality of positions.

Yet another object of this invention is to provide a transformermounting bracket that fits utility poles in a broad range of sizeswithout need for adjustment.

Briefly, these and other objects of the invention are achieved byconstructing a generally V-shaped bracket adapted to receive a utilitypole within the legs of the V. The bracket may be secured to the utilitypole either by means of bolting directly through the pole or by use ofan island plate positioned against the pole and fastened to the bracket.Transformers may be mounted in fixed positions, or alternatively may bemounted on angularly adjustable plates.

BRIEF DESCRIPTION OF THE DRAWINGS A more complete appreciation of theinvention and many of the attendant advantages thereof will be readilyappreciated as the same becomes better understood by reference to thefollowing detailed description when considered in connection with theaccompanyin Drawings, wherein:

FIG. 1 is a perspective exploded view of one embodiment of theinvention;

FIG. 2 is a cross-sectional view of one embodiment of the inventionshowing the technique of mounting a bracket to a utility pole using anisland plate;

FIG. 3 is a cross-sectional view of one embodiment of the inventionshowing a technique of mounting a bracket to a utility pole using bolts;

FIG. 4 is a cross-sectional view of one embodiment of the inventionillustrating the stacking of brackets;

FIG. 5 is a cross-sectional view of a second embodiment of the inventionshowing angularly adjustable transformer mounts;

FIGS. 6a, 6b, and 6c are plan views of the second embodiment of theinvention showing the details of the angularly adjustable transformermounts; and,

FIG. 7 is a perspective view of an adjustable support bracket.

DESCRIPTION OF AN ILLUSTRATIVE EMBODIMENT Referring now to the Drawings,wherein like reference numerals designate identical or correspondingparts throughout the several views, and more particularly to FIG. 1thereof, the instant invention is shown as including a primarilyV-shaped bracket 10, which may, for example, be formed of a single sheetof steel, aluminum alloy, or other suitable material.

Bracket 10 is formed of a pair of leg portions 12 and 14 oriented at anangle of approximately to one another and joined by a three-sidedchannel portion 16. Channel portion 16 is of U-shaped or rectangularcrosssection and includes two' side portions 18 and 20, respectively,interconnected by a base portion 22. Legs 12 and 14 join side portions18 and 20, respectively, with the plane of each leg forming an angle ofapproximately 135 with the plane of its associated side portion. At theends of legs 12 and 14 opposite channel portion 16 are two wing orflange portiom 24 and 26, respectively. Flange portions 24 and 26 areformed of portions of the same sheets of material as legs 12 and 14 bentat angles of 90 relative to the leg portions. A plurality of mountingholes'28 are drilled throughout the structure of bracket 10. Forexample, four-holes 28 may be drilled in each of leg portions 12 and 14for mounting bracket to a utility pole. Two holes 28 may be drilled ineach of flange portions 24 and 26, as well as in channel base portion 22for securing the transformers or other equipment to be supported tobracket 10.

In use, bracket 10 is placed adjacent a utility pole 30 with the utilitypole between and tangentto leg portions 12 and 14. The bracket 10 issecured to the pole in one of two alternative methods to be discussedmore fully hereinafter, and then three transformers 32 are secured toflange portions 24 and 26 and to channel base portion 22. I

It will be noted that the purpose of channel portion 16 is to permit atransformer to be mounted to channel base 22 after bracket 10 hasbeen-secured to utility pole 30. That is, leg portions 18 and 20 ofchannel portion 16 cause channel base portion 22, to which thetransformer 32 will be mounted, to be spaced from utility pole 30 suchthat there will be sufficient room for mounting bolts or other fasteningmeans between utility pole 30 and the inside face of channel baseportion 22. This same room, of course, is also used for the insertion oftools, such as wrenches, to simplify the task of tightening bolts whenmounting a transformer to channel base 22.

Although in FIG. I the side portions 18 and 20 of channel section 16, aswell as flange portions 24 and 26 are shown to berelatively short inlength compared with leg portions 12 and 14, these various channel sideand wing portions may be lengthened should circum stances warrant suchmodification.

As noted hereinabove, the mounting of bracket 10 may be accomplished ineither of two manners. The first technique of mounting bracket 10involves the use of an island plate 34 and is shown most clearly in FIG.2. The island plate 34, which is also shown in FIG. 1, is a flat,generally rectangular piece of metal, in which at least four holes 29are drilled. Island plate 34 includes pairs of closely spaced holes 29,both pairs of holes being located along one edge of island plate 34 andnear the corners of the plate Holes 29 are made ova],

rather than simply round, in order to accommodate bolts passing throughthem at an angle.

The technique of using island plate 34 is shown in FIGS. 1 and 2.Initially, bracket 10 is placed against utility pole 30 with the utilitypole inside the V formed by leg portions 12 and 14. Island plate 34 isthen placed adjacent pole 30 at a position halfway between leg portions12 and 14 and opposite channel member 16 of bracket 10. A plurality ofbracket mounting bolts 36, four, for example, are then passed throughholes 29 in island plate 34 and through holes 28 in leg portions l2 and14. Placing nuts on these bolts andtightening the nuts draws islandplate 34 into tight non-sliding engagement with utility pole 30, therebypreventing bracket 10 from sliding or moving in any way on pole 30.Transformers 32 may then be bolted to wing portions 24 and 26 and tochannel base portion 22 by means of a plurality of transformer mountingbolts 38.

A second means of mounting bracket 10 without using island plate 34 isillustrated in FIG. 3. In lieu of the use of island plate 34, holes maybe drilled directly through utility pole 30, and bracket mounting bolts36 may be placed through holes 28 in leg portions 12 and 14 of bracket10 and then throughthe holes drilled through utility pole 30. Once nutsare fastened to the ends of these bolts, bracket 10 is secured directlyto pole 30 and transformers 32 may then be fastened to bracket 10. 1

Both of these mounting techniques possess certain advantages. The islandplate technique requires an ad ditional part, but does not requiredrilling through the utility pole. Thus, it is advantageous where it isdesired not to weaken the pole by drilling through it, or where the poleis of a material that cannot easily be drilled. Direct bolting to a poleis more conventional, and may be useful where pole drilling equipmentisreadily available, and no special problems exist.

As will be apparent to those skilled in the art, the configuration ofbracket 10, as well as the mounting techniques described hereinabove,provide numerous advantages. For example, the V-shaped configuration ofbracket 10 enables it to fit poles with a broad range of diameterswithout any need for adjustment or bending of any sort. The bracketmember may simply be placed up against virtually any pole and theV-shaped configuration of its leg portions 12 and 14 permit immediateadjustment to the diameter of the pole. In addition, the relativelystraightforward shape of bracket 10 permits extremely easy manufacturesince the bracket may be made of a single sheet of material, such assteel, aluminum alloy, and the like, which is bentto an appropriatedegree at appropriate points. This may be done in a simple series ofbreaking operations without any need for any heat treating of thebracket material.

Furthermore, as shown in FIG. 4, V-shaped brackets 10 may be compactlystored since they may be stacked one upon another without wasting space.This may be achieved either by producing a plurality of brackets 10 withchannel portions 16 of various sizes so that the channel portions mayfit inside one another, or brackets 10 may be formed with the side walls18 and 20 of channel member 16 angled slightly apart from one another,in which case brackets 10 will also be able to be stacked closely oneupon another.

A second embodiment of the invention is shown in FIG. 5. Like theembodiment of FIGS. 1 through 4, the FIG. 5 embodiment shows a bracketassembly 40 which is generally. V-shaped. Unlike the previouslydescribed embodiment, bracket assembly 40 is not comprised of a singlepiece of metal, but instead includes a plurality of pieces assembledtogether. More particularly, bracket assembly 40 includes two identicalleg portions 42 and 44. At each end of both of leg portions 42 and 44 isa foot portion 46 formed by bending a portion of each of ends of legs 42and 44 so that the planes of bent portions (i.e., foot portions 46) forman angle of approximately 135 with the planes of the leg portions 42 and44. Two foot portions 46 are then bolted directly to one another in sucha manner that leg arm portions 42 and 44 are secured together and arepositioned at an angle of approximately 90 to one another. This assemblyresults in a V-shaped bracket in which the two foot portions 46 whichare bolted together are positioned at the vertex of the V, whileportions 42 and 44 form the legs of the V, with an angle ofapproximately 90 between them. This V-shaped assembly may be mounted toa utility pole 30 in precisely the same manner as was the embodiment ofFIGS. 1 through 4; that is, using either an island plate 34 or directlybolting the arms 42. and 44 of the bracket to pole 30. However, themeans of mounting transformers to bracket assembly 40 is different thanfor bracket 10.

An adjustable support bracket 48 must be secured to the threeextremities of bracket 40 before transformers can be mounted on thebracket assembly.

As shown most clearly in FIG. 7, adjustable support brackets 48 eachconsist of a single panel of metal bent into two planar portions 50 and52 at right angles to one another. Planar portion 52 is simply arectangular area having a pair of mounting holes 54 drilled in it,although it is somewhat shorter than planar portion 50. Planar portion50 which is in the general configuration of an elongated right trianglewith one of its points truncated, has a base 56, with which planarportion 52 in integral, and a hypotenuse 58. These two sides are joinedby a third side 59. A plurality of holes 60, 62, 64, and 66 are drilledat various points through planar portion 50. More particularly, hole 60is drilled near the point at which base 56 and hypotenuse 58 intersect.Hole 62 is drilled near the point at which third side 59 and hypotenuse58 intersect. Hole 64 is drilled near hypotenuse 58 on a lineestablished by holes 60 and 62. Hole 66 is drilled near the point atwhich base 56 and third side 59 intersect. It is significant that thedistance between holes 66 and 64 is the same as that between holes 66and 62 to facilitate adjustment of support brackets 48.

' As was previously pointed out, adjustable support brackets 48 aremounted to foot portions 46. Referring now to FIGS. 6a, 6b, and 6c, thevarious manners in which adjustable support brackets 48 may be securedto foot portions 46 are shown more clearly. Referring first to FIG. 6a,it is shown that each of foot portions 46 includes three holes 68, 70(shown with bolts through them), and 72 arranged in a line. The spacingbetween the holes is such that the distance between holes 68 and 70 infoot portions 46 is equal to the distance between holes 66 and 62 aswell as that between holes 66 and 64 of adjustable support brackets 48.The distance between holes 68 and 72 of foot portions 46 is the same asthat between holes 60 and 66 of support brackets 48. As a result, it ispossible to mount adjustable support brackets 48 to foot portions 46 inthree possible angular configurations as shown in FIGS. 6a, 6b, and 6c.For example, in FIG. 6a, adjustable support bracket 48 is shown alignedin such a manner that holes 66 and 62 of support bracket 48 arejuxtaposed to holes 68 and 70 of foot portion 46. Similarly, in FIG. 6b,holes 66 and 64 of support bracket 48 are juxtaposed to holes 68 and 70of foot portion 46, causing support bracket 48 to be fastened at anangle different from that shown in FIG. 6a. Again, in similar fashion,FIG. 6c shows adjustable support bracket 48 arranged so that holes 66and 60 are juxtaposed to holes 68 and 72 of foot portion 46, causingadjustable support bracket 48 to be fixed in yet a third positionrelative to foot portion 46. l

The significance of these various positions in terms of transformermounting is illustrated most clearly by reference to FIG. 5. There, aplurality of identical transformer mounting plates 74, 76, and 78 areshown secured to adjustable support brackets 48. Transformer mountingplates 74, 76 and 78 are basically rectangular plates of suitable metalmaterial through which plate mounting holes 80 (shown with bolts throughthem) and transformer mounting holes 81 have been drilled. Thetransformer mounting plates 74, 76 and 78 are secured to adjustablesupport brackets 48 by placing the mounting plates parallel with planarportion 52 of adjustable support brackets 48, and juxtaposing'holes 80in transformer mounting plates 74, 76, and 78 with holes 54 in theplanar portion 52. Bolts may then be passed through the juxtaposed holesand the trans former mounting plates may thereby be secured in positionon adjustable mounting brackets 48. The angle at which the transformermounting plates 74, 76 and 78 are secured relative to utility pole 30depends upon the angle at which adjustable mounting brackets 48 aremounted to leg portions 46. For example, referring to FIGS. 5 and 6a, b,and c, the position of transformer mounting plate 74 in FIG. 5corresponds to the mounting position of adjustable support bracket 48 inFIG. 6a. Similarly, the position. of transformer mounting plate 76 inFIG. 5 corresponds to the mounting position of adjustable supportbracket 48 in FIG. 60, and the position of transformer mounting plate 78in FIG. 5 corresponds to the angular position of adjustable supportbracket 48 as shown in FIG. 6b. More particularly, if holes 66 and 62 ofadjustable support brackets 48 are juxtaposed to holes 68 and of footportions 46, the transformer mounting plates 74, 76 and 78 will be in avertical position. That is, the plane of the transformer mounting plateswill be perpendicular to the axis of the utility pole 30. Likewise, ifholes 60 and 66 of adjus ta' ble support brackets 48 are juxtaposed toholes 68 and 70 of foot portions 46, transformer mounting plates 74, 76,and 78 will be in the horizontal position; that is, the plane of thetransformer mounting plates will be parallel to the axis of utility pole30. Similarly, if holes 66 and 64 of adjustable support brackets 48 arejuxtaposed to holes 68 and 70 of foot portions 46, the plane oftransformer mounting plates 74, 76 and 78 will be at an angle of 45 tothe axis of utility pole 30.

It will be noted that each of adjustable support brackets 48 may bemoved from any one of the three positions described to any otherposition simply by changing the position of one bolt. That is, the boltthrough hole 66 of each adjustable support brackets 48 and through hole68 of foot portion 46 may be left in place to act as a pivot as theangular position of the adjustable support brackets is changed.

These adjustable positions are advantageous to utility companies in thatthey provide a great deal of flexi-.

bility in the mounting of transformers and therefore simplify thecoupling of power lines to the transformers and from the transformers toconsumer facilities. In addition, the structure of the bracket assembly40 is extremely simple and therefore makes the brackets extremelyinexpensive to manufacture and also permits them to be manufactured withthe very simplest machinery.

' Obviously, numerous modifications and variations of the presentinvention 'are possible in light of the above teachings. It is thereforeto be understood that within the scope of the appended claims, theinvention may be practiced otherwise than as specifically describedherein.

What is claimed is:

1. A mounting bracket comprising:

a. first and second leg means oriented at an angle to one anotheradapted to abut a supporting pole means, each of said leg meansincluding angularly formed end portions adjacent each end thereof;

b. means joining said first and second leg means together at one endthereof, with one end portion of a first leg means connected in abuttingrelationship with one end portion of said second leg means by passing anumber of connecting bolts through aperture means formed therein,whereby said first and second leg means will be angularly disposed toform a vertex therebetween;

. first load mounting means formed on one end of said first leg meansopposite said vertex;

. second load mounting means formed on an end of said second leg meansopposite said vertex;

. third load mounting means formed on said first and second leg means atsaid vertex; and,

f. means for mounting said bracket on said supporting pole with said legmembers in abutting relation with the surface of said supporting pole,said mounting means including a plate element supported in radiallyextending and abutting relationship with the surface portion of saidsupporting pole and wherein adjustable means is provided for securingeach of said mounting bracket legs to said plate whereby said mountingbracket will be clamped to the surface of the supporting pole.

2. A mounting bracket as described in claim 1 further characterized inthat each of said load mounting means includes a supporting plate memberand wherein said supporting plate member is adjustably connected to eachof said load mounting means whereby said supporting plate member can beselectively positioned at a number of supporting positions angularlydisposed relative to the longitudinal axis of said supporting polemeans.

3. A mounting bracket comprising:

a. first and second leg means oriented at an angle to one another andadapted to abut a supporting pole means;

b. means joining said first and second leg means together at one endthereof to form a vertex between said first and second angularlyoriented leg means, said joining means including leg portions integrallyformed with said leg means and each of which form respective parallelside pore. third load mounting means formed on said base portion at saidvertex; and

f. means for mounting said bracket on said support ing pole with saidleg members in abutting relationship with the surface of said supportingpole, said mounting means including a plate element supported inradially extending and abutting relationship with the surface portion ofsaid supporting pole and including elongated adjustable tension boltmeans securing each of said mounting bracket legs to said plate, whereinsaid mounting bracket will be clamped to the surface of said supportedpole in response to adjustment of said tension bolt means.

4. A mounting bracket as described in claim. 3 further characterized inthat each of said load mount ing means includes adjustable means andwherein each of said adjustable means is selectively settable to anumber of angularly adjusted positions.

5. A mounting bracket as described in claim ,3 further characterized inthat each of said load mounting means includes a supporting plate memberand wherein a supporting plate member is adjustably connected to each ofsaid load mounting means whereby said supporting plate member can beselectively positioned at a number of supporting positions angularlydisposed relative to the longitudinal axis of said supporting polemeans.

6. A mounting bracket comprising:

a. first and second leg means oriented at substantially a ninety degreeangle relative to one another to define a pole receiving areatherebetween, with said leg means adapted to be supported in abuttingengagement with a supporting pole means such that said leg meanscontacts said supporting pole means at circumferentially spacedlocations, and wherein each of said leg means defines an opening formedtherein adjacent the point of contact of said leg means with saidsupporting pole means;

b. means joining said first and second legmeans together at one endthereof to form a vertex between said first and second angularlyoriented leg means, said joining means including leg portions integrallyformed with said leg means and each of which form respective parallelside portions joined by integrally formed base portion;

. first load mounting means formed on an end of said first leg meansopposite said vertex;

second load mounting means formed on an end of said second leg meansopposite said vertex;

portion at said vertex; and f. means for mounting said bracket on saidsupporting pole with said leg members in abutting relationship with thesurface of said supporting pole and'with said legs contacting said poleat said circumferentially spaced location adjacent said openings formedin said legs, and wherein said mounting means includes at least oneelongated adjustable tension bolt means extending through said openingin each of said leg means and through complementary openings formed insaid supporting pole, and wherein said elongated tension bolt means areoriented at substantially a ninety degree angle relative to each otherwhen secured in a bracket supporting relationship.

third load mounting means formed on said base

1. A mounting bracket comprising: a. first and second leg means orientedat an angle to one another adapted to abut a supporting pole means, eachof said leg means including angularly formed end portions adjacent eachend thereof; b. means joining said first and second leg means togetherat one end thereof, with one end portion of a first leg means connectedin abutting relationship with one end portion of said second leg meansby passing a number of connecting bolts through aperture means formedtherein, whereby said first and second leg means will be angularlydisposed to form a vertex therebetween; c. first load mounting meansformed on one end of said first leg means opposite said vertex; d.second load mounting means formed on an end of said second leg meansopposite said vertex; e. third load mounting means formed on said firstand second leg means at said vertex; and, f. means for mounting saidbracket on said supporting pole with said leg members in abuttingrelation with the surface of said supporting pole, said mounting meansincluding a plate element supported in radially extending and abuttingrelationship with the surface portion of said supporting pole andwherein adjustable means is provided for securing each of said mountingbracket legs to said plate whereby said mounting bracket will be clampedto the surface of the supporting pole.
 2. A mounting bracket asdescribed in claim 1 further characterized in that each of said loadmounting means includes a supporting plate member and wherein saidsupporting plate member is adjustably connected to each of said loadmounting means whereby said supporting plate member can be selectivelypositioned at a number of supporting positions angularly disposedrelative to the longitudinal axis of said supporting pole means.
 3. Amounting bracket comprising: a. first and second leg means oriented atan angle to one another and adapted to abut a supporting pole means; b.means joining said first and second leg means together at one eNdthereof to form a vertex between said first and second angularlyoriented leg means, said joining means including leg portions integrallyformed with said leg means and each of which form respective parallelside portions joined by an integrally formed base portion; c. first loadmounting means formed on an end of said first leg means opposite saidvertex; d. second load mounting means formed on an end of said secondleg means opposite said vertex; e. third load mounting means formed onsaid base portion at said vertex; and f. means for mounting said bracketon said supporting pole with said leg members in abutting relationshipwith the surface of said supporting pole, said mounting means includinga plate element supported in radially extending and abuttingrelationship with the surface portion of said supporting pole andincluding elongated adjustable tension bolt means securing each of saidmounting bracket legs to said plate, wherein said mounting bracket willbe clamped to the surface of said supported pole in response toadjustment of said tension bolt means.
 4. A mounting bracket asdescribed in claim 3 further characterized in that each of said loadmounting means includes adjustable means and wherein each of saidadjustable means is selectively settable to a number of angularlyadjusted positions.
 5. A mounting bracket as described in claim 3further characterized in that each of said load mounting means includesa supporting plate member and wherein a supporting plate member isadjustably connected to each of said load mounting means whereby saidsupporting plate member can be selectively positioned at a number ofsupporting positions angularly disposed relative to the longitudinalaxis of said supporting pole means.
 6. A mounting bracket comprising: a.first and second leg means oriented at substantially a ninety degreeangle relative to one another to define a pole receiving areatherebetween, with said leg means adapted to be supported in abuttingengagement with a supporting pole means such that said leg meanscontacts said supporting pole means at circumferentially spacedlocations, and wherein each of said leg means defines an opening formedtherein adjacent the point of contact of said leg means with saidsupporting pole means; b. means joining said first and second leg meanstogether at one end thereof to form a vertex between said first andsecond angularly oriented leg means, said joining means including legportions integrally formed with said leg means and each of which formrespective parallel side portions joined by integrally formed baseportion; c. first load mounting means formed on an end of said first legmeans opposite said vertex; d. second load mounting means formed on anend of said second leg means opposite said vertex; e. third loadmounting means formed on said base portion at said vertex; and f. meansfor mounting said bracket on said supporting pole with said leg membersin abutting relationship with the surface of said supporting pole andwith said legs contacting said pole at said circumferentially spacedlocation adjacent said openings formed in said legs, and wherein saidmounting means includes at least one elongated adjustable tension boltmeans extending through said opening in each of said leg means andthrough complementary openings formed in said supporting pole, andwherein said elongated tension bolt means are oriented at substantiallya ninety degree angle relative to each other when secured in a bracketsupporting relationship.